Need some advice here, current set-up is a 3/4 HP single speed motor (AO Smith SK1072) running on 110V attached to a Hayward EZ-FLO pump, Hayward S-200 sand filter, plumbing is very simple all 1 1/2" lines, 2 return lines, 1 skimmer, 1 main drain, I do have a Rainbow 320 plumbed in that I use...